Shaft puller



A. G. BROWN SHAFT FULLER 2 Sheets-Sheet 1 Filed July 21, 1947 InventorArthur G. Brown By W and

A. G. BROWN SHAFT FULLER 2 Sheets-Sheet 2 Filed July 21. 1947 InventorArthur 6.- Brown Patented Oct. 11, 1949 UNITED STATES PATENT OFFICESHAFT PULLER. Arthur G. Brown, Cherry, Ill. Application July 21, 1947,Serial No. 762,296

1 Claim. (01. 29-283) This invention relates to new and usefulimprovements and structural refinements in shaft pullers, and theprincipal object of the invention is to provide a device of thecharacter herein described, which may be conveniently and effectivelyemployed for the removal of journals from corn picker rollers when suchjournals are in need of replacement.

A further object of the invention is to provide a shaft puller which, inaddition to its primary purpose above outlined, may also be effectivelyemployed for the pulling of shafts, axles or the like, from housings orfrom similar parts of machinery.

Another object of the invention is to provide a shaft puller which issimple in construction, which will not easily become damaged, and whichmay be quickly and easily manipulated.

An additional object of the invention is to provide a shaft puller whichwill readily lend itself to economical manufacture and which isotherwise well adapted for the purpose for which it is intended. 1

With the above more important objects in view, and such other objects asmay become apparent as this specification proceeds, the inventionconsists essentially of the arrangement and construction of parts asillustrated in the accompanying drawings, in which:

Figure 1 is an elevational view of the invention.

Figure 2 is a further elevational view, taken in the direction of thearrow 2 in Figure 1.

Figure 3 is a cross-sectional view, taken substantially in the plane ofthe line 3-3 in Figure 1.

Figure 4 is a cross-sectional view, taken substantially in the plane ofthe line 44 in Figure 1, and

Figure 5 is a cross-sectional view, taken substantially in the plane ofthe line 5-5 in Figure 1.

Like characters of reference are used to designate like parts in thespecification and throughout the several views.

Referring now to the accompanying drawings in detail, the inventionconsists of the shaft puller designated generally by the referencecharacter In, the same embodyin in its construction a frame If whichincludes a plurality of upwardly convergent, upstanding legs 12 whichsupport at the upp r ends thereof what will be hereinafter referred toas the work engaging plate 13.

This plate is formed substantially at the center thereof with anaperture Hi, the purpose of which will be more fully hereinafterexplained, and it will be also noted that a plurality of upwardlyextending support rods l5 are secured at the lower ends thereof to theplate 13, the upper ends of the rods carrying a rigidly mounted guidingplate l6 which is disposed in spaced parallel relation to the plate l3,as will be clearly apparent.

A pair of spaced parallel guide rods 11 extend slidably through theplate 16, the upper end portions of these rods (l1) being rigidlyconnected together by means of a transversely extending cross-bar 18,while the lower end portions of the rods are rigidly connected to whatwill hereinafter be referred to as the carrier [9.

It may be explained at this point that suitable expansible means, suchas for example, a hydraulic jack 20 of conventional design, isinterposed between the plate I6 and the cross-bar 18, that is to say,the base 2| of the jack rests upon the plate l6, while the projectibleand retractible plunger 22 of the jack bears against the undersurface ofthe cross-bar l8. Needless to say, the jack 2!! is actuated by means ofa suitable lever 23, as will be clearly understood.

Theaforementioned carrier l9 includes in its construction a plate havinga substantially U- shaped cross-sectional configuration, (as is bestshown in Figure 1) the closed end portion medially the length of theplate being removed as at 24, so as to provide a pair of spaced endportions 25 to which the aforementioned rods I! are secured.

It will be noted that the U-shaped plate forming the carrier I9 isdisposed in an inverted position, and a pair of spaced parallel shaftsor pins 26 extend transversely through the carrier and project at bothends therefrom. Suitable hand knobs 21 are secured to the projecting endportions of the pins at one side of the carrier, While a pair of gears28 are secured to the pins at the relatively opposite side of thecarrier, the gears 28 bein in mesh, as is best illustrated in Figure 4.

Finally, a pair of coaoting cam members 29 are secured to themid-portion of the pins 26, the members 29 being disposed between theside pieces of the U-shaped carrier [9 and each including a toothed camsurface portion 30, as indicated in Figure 5.

The corn picker roller assembly 3| on which the invention is primarilyintended to be used, consists of a roller 3'2 provided in the endsthereof with a pair of longitudinally projecting journals 33. Thesejournals are pressed into suit- 3 able bores 34 with which the endportions of the rollers are provided, and after the journals have beensubjected to a certain amount of wear, it becomes necessary to removethe journals from the bores 34, in order to facilitate replacement.

In such event, it is only necessary to place the roller assembly 3! in asubstantially vertical position under the plate 13, whereupon the upperof the journals 33 may be passed upwardly through the aforementionedaperture 14 in the plate [3, while 'the adjacent end of the roller 32engages the underside of the last mentioned plate.

The device is then so adjusted that the cam surfaces 30 of the members29 engage the diametrically opposed sides of the upwardly projectingjournal, whereupon, by simply actuating the jack 20 so as to raise the:cross-bar [.8 and.

the associated carrier 19 in the direction of the arrow 34, the journalgripped by the members 29 of the carrier I9 will-be pulled upwardly andoutwardly from the bore 34, While the roller 32' remains relativelystationary, by virtue of its contact with the underside of the plate l3.

Needless to say, during the pulling operation, the toothed surfaces 300ithe members 29 will be urged into a firm and a secure grippingengagement with the journals by virtue of the eccentric or cam-likeconfiguration of the gripping members. However, it may be added that thegripping engagement of the members 29 withthe journals is not such thatit would damage or mar the work.

The members 29 may be disengaged from the journal (after the latter hasbeen pulled) by simply rotating one of the knobs 2 I, which action;through the medium of the meshing gears 28, will result in simultaneousrotation of the cam members, as will be clearly apparent.

Finally, it may be added that while a hydraulic jack (20) has beenillustrated in the accompanying drawings, a conventional screw jack, orthe like, may, of course, be employed.

It is believed that the advantages and use of the invention will beclearly apparent from the foregoing disclosure and. accordingly, furtherdescription thereof at this point is deemed unnecessa-ry.

a While in the foregoing there has been shown and described thepreferred embodiment of this invention it is to be understood that minorchanges in the details of construction, combination and arrangement ofparts may be resorted to without departing from the spirit and scope ofthe invention as claimed.

Having described the invention what is claimed as new is:

In a shaft puller, the combination of a supporting member including apair of U-shaped side plates disposed in spaced parallel relation and apair of top plates integrally connecting upper edges of said sideplates, said top plates being provided with apertures to receive a pairof actuating rods, a pair of spaced parallel shafts rotatably journaledin intermediate portions of the side. plates. andlextending transverselyof said member, a pair of coacting cams secured to said shafts betweenthe side plates and having toothed work-engaging peripheries, a pair ofmeshing gears secured to said shafts eXteriorly of said member wherebysaid cams may be rotated simultaneously in opposite directions, and anactuating knob provided at least on one of said shafts exteriorly ofsaid-member.

ARTHUR G. BROWN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date Messinger Aug. 9, 1910 Bayles Jan. 1,1924 Coval Mar. 11, 1924 Ragsd'al'e Aug. 10, 1926 Hockensmith July 2,1935 Heimbach June 29, 1937 Gonser et a1. July 20, 1937 Wyscaver Nov. 4,1947 FOREIGN PATENTS Country Date Germany July 18, 1917 France Sept. 16,1915 Number Number

